View source for Master Controller/Power monitoring

=== Power monitoring ===
* wget https://github.com/scottjw/subfact_pi_ina219/archive/master.zip -O subfact_pi_ina219-master.zip
* unzip subfact_pi_ina219-master.zip
* apt-get install python-smbus
* vi /etc/modprobe.d/raspi-blacklist.conf
** Comment out the "blacklist i2c-bcm2708" line
* vi /etc/modules
** Add 'i2c-dev'
* usermod -a -G i2c pi
* modprobe i2c-dev
* cd subfact_pi_ina219-master